Improvement in figure-tinted paper



UNITED STATES PATENT OFFICE.

GEORGE LA MONTE AND GEORGE G. SAXE, OF NEW YORK, N. Y.

IMPROVEMENT IN FIGURE-TINTED PAPER.

SPECIFICATION. To all whom it may concern:

Be it known that we, GEO. LA MONTE and GEO. G. SAXE, of the city,county, and State of New York, have invented a new and usefulImprovement in Figured Paper; and we do hereby declare the following tobe a full and correct description of the same.

Paper is ordinarily figured by water-marks in the course of manufacture,which render the paper thinner in the figured parts than inthe plainportion. Figures are also sometimes impressed by embossing or printingafter the paper is finished.

The object of our inventionjs to figure the paper by tinting in variousshades or depths of color for purposes of ornamentation as well as tofacilitate the discovery of fraudulent alterations by rendering thefugitive tints more difficult to restore after removal by erasure orchemicals. It is obvious that an elaborate figure would be moredifficult to reproduce than a plain uniform tint.

Our process of figure-tinting may be thus described: The sheet is passedthrough a vat of coloring-liquid, and thence between two rollers, whichpress out the superfluous liquid as in the process of sizing. We engravethe surface of one or both of these rollers with any desired figure ordesign, and such figure or design is transferred to the paper indifferent shades of color.

The following is a description of our process more in detail The pulp iswhite, and is formed into a continuous sheet in the usual way. Afterpassing over a number of heated cylinders for the purpose of drying, itdescends and passes around a cylinder immersed in sizing,

composed of glue and water, and, rising, passes between a wooden and abrass roller, by which all superfluous sizing is pressed out. The paperis then, by the ordinary method, dried and calendered.

Our figure-tinting is accomplished in one of two ways: First, bycoloring the sizing to any desired tint and passing the sheet whilemoist with the colored sizing between a plain wooden roller and a brassroller engraved with the design or devices it is desired to reproduceupon the paper. The raised portions of the roller will press out mostwater and cause the absorption of most color, thus leaving the parts ofthe paper subjected to their action of a dark tint, while the depressedportions will retain more water and impart a lighter shade. When thepaper is of ordinary thickness the figure will show on both sides.

For sensitive figure-tinting we use the following method: After thesheet has passed through the ordinary white sizing and has been pressedbetween rollers in the usual way, it is made to pass under a smallcylinder immersed in the sensitive coloring-fluid, and is then passedbetween the plain wooden roller and the engraved metallic roller, asbefore described. It is then dried and calendered for use.

What we claim, and desire to secure by Letters Patent, is

A paper figured in the process of tinting by means of engraved rollers,substantially as described.

The above specification of our said invention signed and witnessed atNew York this 29th day of December, A. D. 1871.

GEO. LA MONTE.

. Witnesses: GEO. G. SAXE.

L. J. MCKENNA, WM. F. LETT.

